package com.itheima.reggie.cotroller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;


@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {
    @Autowired
    private DishService dishService;
    @Autowired
    private CategoryService categoryService;
    @Autowired
    private DishFlavorService dishFlavorService;


    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto){

        dishService.saveDishAndDishFlavor(dishDto);
        return R.success("保存菜品成功");
    }
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){

        Page<Dish> pageInfo = new Page<>(page,pageSize);
        Page<DishDto> dishDtoPage = new Page<>();


        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();

        queryWrapper.like(name != null,Dish::getName,name);

        queryWrapper.orderByDesc(Dish::getUpdateTime);


        dishService.page(pageInfo,queryWrapper);


        BeanUtils.copyProperties(pageInfo,dishDtoPage,"records");
        List<Dish> records = pageInfo.getRecords();
        List<DishDto> list = records.stream().map((item) -> {

            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item,dishDto);
            Long categoryId = item.getCategoryId();//分类id



            Category category = categoryService.getById(categoryId);

            if(category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            return dishDto;
        }).collect(Collectors.toList());
        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);
    }

    //菜品删除
    @DeleteMapping
    public R<String> delete(Long ids){
        LambdaQueryWrapper<Dish> queryWrapper=new LambdaQueryWrapper<>();
        //queryWrapper.eq(Dish::getStatus,1);
        queryWrapper.eq(Dish::getStatus,1);
        queryWrapper.eq(Dish::getId,ids);
        int count=dishService.count(queryWrapper);
        if (count>0){
            throw new CustomException("菜品在售，不能删除");
        }
        dishService.deleteDishAndDishFlavors(ids);
        return R.success("删除成功");
    }
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id){
        DishDto dishDto = dishService.getByIdWithFlavor(id);
        return R.success(dishDto);
    }
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){

        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId() != null ,Dish::getCategoryId,dish.getCategoryId());

        queryWrapper.eq(Dish::getStatus,1);

        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);

        List<Dish> list = dishService.list(queryWrapper);

        List<DishDto> dishDtoList = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();//分类id

            Category category = categoryService.getById(categoryId);
            if(category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }


            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
            lambdaQueryWrapper.eq(DishFlavor::getDishId,dishId);
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);
            dishDto.setFlavors(dishFlavorList);

            return dishDto;
        }).collect(Collectors.toList());

        return R.success(dishDtoList);
    }

}    